D-Bot Core_XY gone Linear (was: in Threes)

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Version Actualized As Of March 28Th, 2020. Build With The Main Body Of "D-Bot Core-Xy 3D Printer" By Spauda01 Http://Www.Thingiverse.Com/Thing:1001065 With That Very Extensive And Helpful Documentation, Which Led Me On This Path, Some Parts Of "J-Bot Core-Xy?" By Jonnaylin Http://Www.Thingiverse.Com/Thing:1721957 And The "Beefed-Up Corner For D-Bot / 20Mm V-Slot Rails" By Beepbeep Http://Www.Thingiverse.Com/Thing:1605514 I Only Lowered The Upper Front Rail (N In Manual) To Just Below The Bed In Z-Home Position For Better Accessability Of Hot Ends And Bed Surface (Almost Necessary With A 20X20 Rail For The X-Carriage). All Moving Parts Went Through A Process Of Changes. These Got Their Own Thingiverse Pages: X - "X-Carriage, Linear, Modular, 20X20 V-Slot" By Printingsome, Https://Www.Thingiverse.Com/Thing:3350550 Y - "Y-Carriage_For_20X20_X-Rail" By Printingsome, Https://Www.Thingiverse.Com/Thing:3401126 Y - "3-Wheeled Y Guide Goes Linear" By Printingsome, Https://Www.Thingiverse.Com/Thing:2701748 Z - "D-Bot_Linear_Z-Guide" By Printingsome" (Version With Straight Mounts) Https://Www.Thingiverse.Com/Thing:2779260 Z - "Back_Leadscrew_Bracket" By Printingsome Https://Www.Thingiverse.Com/Thing:4246095 Z - "Z-Axis_Brake" By Printingsome Https://Www.Thingiverse.Com/Thing:4245241 Other Parts: Electronics Box: The Rumba Version Of "Skr-V1.3, Ramps 1.4 And Rumba Enclosures For V-Slot" By Printingsome, Http://Www.Thingiverse.Com/Thing:2053035 "Ball_Foot For D-Bot By Printingsome" Dampens Well With Tennis Balls, Http://Www.Thingiverse.Com/Thing:2057063 "Reprapdiscount Full Graphic Smart Controller" By Trigubovich, Http://Www.Thingiverse.Com/Thing:1116163 For Which I Added Some V-Slot Supports Here. 3-Point Supported Bed: "Präzisionsplatten - 326X326Mm (Sparkcube Xl) 3 Punkt" From Filafarm.De, Heated With A 300X300Mm 220V Silicone Heated Bed From China. I Planned To Use It With A Printbite From Flex3Drive, But That Was A Waist Of Money, So Now I Am Using Ikea Mirrors 300X300Mm And Hairspray. I Gave A Little Twist To The Bed Supports: To Diminish Sideways Motion Of The Bed I Now Use 3 M3X80 Bolts. Normally I Don'T Name Sellers For General Stuff But These Were Hard To Find, So Here Goes: Https://Www.Aliexpress.Com/Item/Funssor-3D-Printer-Accessory-M3-Long-Studding-Bolts-For-Ultimaker-Cross-Sliding-Table-80-Mm-Great/32837793562.Html These Are Only Threaded Over The Last 34Mm, So When You Screw One In A Support, Using The Inbuilt Nut, Which Has To Stay, It Ends Up Gliding Through Below The Bottom. There You Can Put A Couple Of Washers And For Instance "M3 Rosettes For Spring-Loaded Platform Adjustment" By L0L0, Https://Www.Thingiverse.Com/Thing:625911 On It. This Gives Just That Bit Less Room For Sideways Movement And The Absence Of Thread Makes The Vertical Movement Smoother. Provided That The Bolt Glides Easily Through The Support With Nut. You Have To Check For That In Advance, Because The Bolts Can Vary Just That Much And The Nut, Which I Have Glued Fixed, Has To Be In Line Whith The Hole Through The Support. Rethreading The Nut Once Helped Too. Of Course Check Also During And After Mounting The Supports Etc. You Can Secure The Heads Of The Bolts With Glue, When They Tend To Turn With The Rosette, But I For Now Don'T Feel That'S A Problem. The Wheels Are Completely Gone, But I Am Back To The Lead Screw, I Only Use One At The Back, After My Adventures With The Bed Hoists. And That Is Beause I Finally Found One Which Gives Better Results In The Z-Movement Than I Ever Got. It Is Build Together With The Stepper Motor And Again, I Name The Seller Here Because I Only Found This Quality Here. It Is Part No. 17Hs3001-400N At Robotdigg.Com. Please Inform Me (And The Readers Of This Thing) If You Know Of Other Good Ones. I Don'T Have Any Commercial Interest In Them. The Only Problem With Using 1 Lead Screw Was The Going Down Of The Bed After Power-Off. I Solved This With The Above Mentioned Remix Of The Simple But Wonderful Idea Of Gear_Down_For_What, Https://Www.Thingiverse.Com/Thing:2238760. By Controlling The Braking Force To Just Preventing The Bed From Going Down There Is Hardly Any Extra Load For The Stepper When Powered, Which In Any Case Has Ample Reserve, Even With This 326X326 Bed-Configuration. One Can Buy A Cheap But Beautiful Cover For The Solid State Relay, Which Covers All The Isolated Parts And Leaves The Hot Spots Open For The World To Enjoy. ;-( It Seemed Better For My Health To Make A Less Inviting Cover. The Y-Endstop, A Bit More Adjustable Then The Original One, Can Be Used At The Front And The Back, See Picture, And Accommodates A Type Kw11-3Z 5A 250V Microswitch As Well As One With Some Electronics Around It (As In The Original D-Bot, I Think, Don'T Know Type Number, Sold As An "Endstop"). You'Ll Have To Check For Yourself If It Suits Yours. The Distances From Center Wheel To The Rail Are Ca. 7 And 11Mm Vertically Respectively And Ca. 3Mm Sideways.That 11Mm Is A Bit Much, But I Couldn'T Get It Less And It Works With My Stuff. ;-) The Z-Endstops You See Go With The Linear Z Guide. As For The Electronics, I Use Drv8825 For The X- And Y Axis With 1/32 Microstepping And A4988 (1/16 Microstepping) For The Z-Axis. That Last One Was A Great Improvement When I Still Used The Lead Screws And Wheels, And Why Not Keeping It That Way, Although All My Troubles With Lifting The Bed, With 2 Or 3 Lead Screws And With 3 Or 4 Wheels, Are Over. I Now Use The Rumba, But That Went Well With With The Ramps1.4. For The Nimbles I Use The A4988 As Well (Advice From The Manufacturer). Things I Left Behind In This Process Of Changes, Among Others: "Lead_Screw_Bracket (Self-Adjusting)" By Printingsome Https://Www.Thingiverse.Com/Thing:2664656 Which I Still Can Wholeheartedly Recommend For Those Using Lead Screws At The Side. X - "3-Wheeled Or Linear Railed Modular X-Carriage (D-Bot Core_Xy 3D Printer)" By Printingsome, Https://Www.Thingiverse.Com/Thing:2206664 There Is A 3-Wheel Version And A Linear Version And Modules For The E3Dv6, The Cyclops, The Chimera, With Bowden Tubes As Well As With Nimbles. Z - "Bed Hoist For A 3D Printer - Final Version" By Printingsome Https://Www.Thingiverse.Com/Thing:3732450 I Still Think That This, Or The Second Version, Which Is Much Simpler, Is An Ideal Way Of Lifting The Bed, But For The Lack Of Effordable Good Quality Mechanical Parts.

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